List of Famous people who died at 97

Ruth Mary Rogan Benerito was an American chemist and inventor known for her work related to the textile industry, notably including the development of wash-and-wear cotton fabrics. She held 55 patents.

Peter Thomas Geach was a British philosopher who was Professor of Logic at the University of Leeds. His areas of interest were philosophical logic, ethics, history of philosophy, philosophy of religion and the theory of identity.

Gaston-Armand "Guy" Amaudruz was a Swiss neo-fascist political philosopher and Holocaust denier.

Willem Johan "Pim" Kolff was a pioneer of hemodialysis, artificial heart, as well as in the entire field of artificial organs. Willem is a member of the Kolff family, an old Dutch patrician family. He made his major discoveries in the field of dialysis for kidney failure during the Second World War. He emigrated in 1950 to the United States, where he obtained US citizenship in 1955, and received a number of awards and widespread recognition for his work.

Hans von der Groeben was a German diplomat, scientist and journalist and member of the European Commission.

Jean-Louis Koszul was a French mathematician, best known for studying geometry and discovering the Koszul complex. He was a second generation member of Bourbaki.

Henri Dutilleux was a French composer active mainly in the second half of the 20th century. His small body of published work, which garnered international acclaim, followed in the tradition of Maurice Ravel, Claude Debussy, Albert Roussel and Olivier Messiaen, but in an idiosyncratic style.